Vehicle Torque Control Using Corrected Longitudinal Acceleration
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Solution Overview
Problem
Existing vehicle control systems fail to optimize torque control strategies, particularly in turning scenarios, leading to reduced stability and comfort, and do not adequately consider active safety interventions and gear status, resulting in suboptimal driving experiences.
Innovation Solution
A torque control method that determines vehicle status and required longitudinal acceleration, adjusts torque based on corrected values considering constraints and sensor data, including active safety functions, to enhance stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional torque control is used without optimization, then the control system is simple, but vehicle stability and comfort deteriorate during turns
Solution Approach 1:
The system performs preliminary actions by obtaining status information including active safety function status and gear status before torque control, and pre-calculates the corrected value of longitudinal acceleration based on these conditions. This allows the torque control to be optimized in advance for turning scenarios, improving vehicle stability without adding complex real-time decision-making complexity
Solution Approach 2:
The system implements feedback by continuously monitoring status information such as active safety function status, gear status, lateral acceleration, and longitudinal acceleration. The torque control apparatus uses this feedback to dynamically adjust the corrected value of longitudinal acceleration and optimize torque control, thereby maintaining vehicle stability and comfort during turns
2Ease of operation
If torque control does not consider active safety interventions and gear status, then the control strategy is simple, but driving experience deteriorates
Solution Approach 1:
The system applies local quality by considering specific local conditions such as active safety function status (e.g., AEB, LKA, ACC) and gear status (P, R, N, D, S) in the torque control strategy. Different torque control corrections are applied based on the specific combination of active safety functions and gear status, providing optimized driving experience for each local condition without requiring a completely complex overall system
Solution Approach 2:
The system implements dynamics by making the torque control strategy adaptive and dynamic based on real-time status information. The corrected value of longitudinal acceleration is dynamically adjusted according to the current active safety function status and gear status, allowing the control strategy to evolve with changing driving conditions and provide optimal driving experience
3Stability of the object's composition
If inappropriate deceleration or acceleration operation is performed during turns, then driver operation freedom is high, but vehicle stability and comfort worsen
Solution Approach 1:
The system performs preliminary anti-action by calculating the corrected value of longitudinal acceleration that counteracts harmful effects before they occur. During turns, the system pre-determines the appropriate torque control correction based on status information, preventing vehicle shaking and skidding caused by inappropriate driver deceleration or acceleration operations, rather than reacting after the harmful effects manifest
Solution Approach 2:
The system uses feedback to monitor lateral acceleration and longitudinal acceleration to detect turning conditions and inappropriate driver operations. Based on this feedback, the torque control apparatus dynamically adjusts the corrected value of longitudinal acceleration to counteract vehicle shaking and skidding, maintaining vehicle stability while allowing driver operation freedom
Data Source
AI summary
A torque control method is provided, including: obtaining status information of a vehicle; determining a vehicle status and a required value of longitudinal acceleration based on the status information of the vehicle; determining a corrected value of the longitudinal acceleration based on the status information of the vehicle, the required value of the longitudinal acceleration, and a constraint corresponding to the vehicle status; and controlling torque of the vehicle based on the corrected value of the longitudinal acceleration. A torque control apparatus, a transportation means, a chip system, a computer-readable storage medium, and a computer program product are also disclosed.